Re: How to verify the BSR Election ?

From: louis john (west_coast@inbox.com)
Date: Fri Jun 29 2007 - 10:51:34 ART


Ben,

Thanks indeed, I did not that BSR does not elect. Aha !, that's why I can
see all the RPs on all routers with priority information.

mmm, Autorp elect the highest IP RP and send the elected RP to the
other routers,

So BSR burden the other routers with more job , Autorp announce the
winner and make the domain consisten with which RP to use.

:)

  -----Original Message-----
  From: bmunyao@gmail.com
  Sent: Fri, 29 Jun 2007 16:35:02 +0300
  To: west_coast@inbox.com
  Subject: Re: How to verify the BSR Election ?

  Louis,

  If I'm not mistaken, the BSR does not elect RP. Instead, it compiles
  the RP set from the unicast RP candidate announcements, and
  multicasts this to all PIM routers using 224.0.0.13 . Each PIM router
  then elects RP for each group address, based on candidate RP priority
  setting, or BSR candidate hash mask.

  HTH

  Ben

  On 6/29/07, louis john <west_coast@inbox.com> wrote:

    Hi Group : I have collected the following debug out of the BSR
    router , please tell me if this way of verification is valid to
    know who was elected as RP

    debug ip pim bsr

    *Mar 1 01:25:30.175: PIM-BSR(0): RP-set for 224.0.0.0/4
    *Mar 1 01:25:30.179: PIM-BSR(0): RP(1) 130.100.5.5, holdtime
    11 sec priority 100
    *Mar 1 01:25:30.179: PIM-BSR(0): RP(2) 130.100.2.2, holdtime
    119 sec priority 200

    in the above debug, can we say R5 was elected because of two
    things : ?

    1 - Lower Priority
    2 - RP(1) is shown as the first RP in the RP-set.

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